Railroad crossing



Dec. 26, 1922. v 114 223. J. F. J AC 0 B S.

' RAILROAD CROSSING.

FILED AUG-4, I92Z- 2 SHEETSSHEEI 1.

t]: Jamla.

attorney Dec, 26, 1922. 11,440,223, J. F. JAC O B S.

RAILROAD CROSSING.

FILED AUG-4, i922- 2 SHEEISSHEET 2.

m it atenteci JAMES E. JACOBS, 0F NEEDIVIOlR-E, GEORGIA.

rinrnnonn cnossrne.

Application filed August 4,1922. Serial No. 579,818.

To all whom it may concern:

Be it known that T, Janus F. Jaoons, a citizen of the United States, residing at Needmore, in the county of Wayne and State of Georgia, have invented certain new and useful Improvements in Railroad Crossings; and T do hereby declare the following to he a full, clear, and exact description oi the invention, such as will enable others skilled in the art to which it ap pertains to make and use the same.

This invention relates to a cross-frog for railroads and has for its primary object to obviate the jar, jolt and noise incident to the wheels of the rolling stock crossing over the spaces provided at the intersections of the rails for clearance of the flanges of the car wheels.

Other objects and advantages will be appaient and suggest themselves as the nature oi the invention is understood.

iVhile the drawings illustrate an embodiment of the invention it is to be understood that few .t conditions and requirements, various changes in the form, proportion and minor details o't construction may be resorted to without departing from the nature of the invention Referring to the accompanying drawings forming part of the application.

Figure 1 is a top plan view of a railroad cross vfrog embodying the invention, the spaces at the intersection 01" the rails of one track being closed,

l gurc 2 is a view similar to Figure 1., the a is of the rails of the other track being a and parts being broken away, i igurc is a section on the line 3-3 ot 'ure 1. looking in the direction of the arrows,

Figure -l is a section on the line -il4e of Figure 1. looking in. the direction of the ai'iows, and

l igurc 3 is a detail perspective view oi one of the tiller blocks and the support therefor.

Corresponding and like parts are referred to in the following description and designated in the several views oi the drawings by like reference characters.

The frog illustrated is of the nature com monly provided where two tracks cross at a rightangle and may be of any approved construction and may consist of a single another and to a bed plate.

in adapting the same to meet dif-- casting or a number or rails secured to one The numeral 1 designates the rails of one track and 2 the rails of the intersecting or crossing track. The corners of the intersecting rails 1 and 2 are cut away as indicated at The interme diate rails 1 are in line with the rails 1 and spaces 1 are provided at the ends thereof for clearance of the flanges ot' the wheels of the rolling stock. Intermediate rails 2 are in line with the rails 2 and spaces 2 are provided at the ends thereof for a like purpose to the spaces 1.

1-. filler block ais located at each intersection of the rails 1 and 2 and is of triangular lorin, the rightangularly disposed faces being adapted to abut'the respective intermediate rails 1 and 2 and the base being in sliding engagement with the inclined race 3 formed by cutting away the corner of the intersecting rails 1 and 2. The tops of the filler blocks 4- are in the plane of the heads of the several rails comprising he frog. In one position of the filler blocks 4:, the spaces 2 are closed so that a ,rain moving over the crossing on the rails 53 has a continuous track and is free from the jar, jolt, and noise usually experienced when passing over a crossing in which the spaces for the wheel flanges are open. In the other extreme position of the filler blocks 4;,the spaces 1 are closed so that a train passing over the crossing on the rails 1 has a continuous track. The filler blocks .4- may be mounted in any preferred way and are connected for simultaneous movement and are operable from a given point. As shown. each filler block 4 is provided with a support 5 in, the nature ot a bar. the same preferably forming a part of the bloclr to obviate a oint. The support 5 extends a like distance beyond opposite sides ot the block and is seated upon the bottom of a recess termed. at the intersection of the rails and in communication with the spaces 1 and 2. A flange 6 projecting from a side of the support 5 engages a groove formed in the inclined face 3 and serves to hold the support and block upon its seat against vertical displacement. A projection 7 at the outer side of each of the intermediate rails 1 and 2 engagesadjacent ends of contiguous supports 5, thereby assisting materially in directing the same in their movements and retaining them in place.

As hereinbefore stated, the tiller blocks 4- and their supports are connected for simultaneous movement and various means may be resorted to for this "purpose, the means illustrated demonstrating one way of accomplishing the desired end. Bell cranks 8 are located in the angles formed between the intersecting rails 1 and 2 and are pivoted to braces 9. Cables 10, or analogous flexible connections, pass through openings formed in the rails and connect the arms of the bell cranks with the ends of the supports ,5. A lever 11 fulcrumed intermediate its ends to a crosstie or bed of the frog, is connected by n'i'eans of links 12 with arms of adj acent, bell cranks. A rod 13 connects the lever 11 with.

a switch stand (not shown) or other operating member conveniently positioned for operation of the filler blocks as required. It is observed that the supports 5 have a diagonal arrangement and move in diagonal lines corresponding to the inclined faces 3. By reason of this arrangement, the filler blocks l move in an oblique path from one space 1 to the other space 2 and vice versa. By reason of this movement, one of said spaces is completely .closed'ancl the other unobstructed so that the train moving over the track in which the spaces are closed by the filler blocks 4- is not subjected to any jar or jolt and the movement of the train over the crossing is wholly noiseless.

lVhat isclaimed is:

A frog crossing for railroads having the corners of intersecting rails cut away to form inclined faces, triangular filler blocks slida'ble on said inclined ifaces supports for the filler blocks projecting in opposite directions therefrom, projections upon the outer sides of the intermediate rails of the frog engaging the outer ends of said supports, bell cranks supported in the angles formed between intersecting rails, and connecting means between the bell cranks and said supports to effect simultaneous movement of the latterand the filler blocks carried thereby.

In testimony whereof I atfix my signature in presence'of two witnesses.

7 JAMES F. JACOBS.

Vitnesses:

D. T. MIDDLETON, Gno. E. ROBERTSON. 

